Home / 9,327.42-12,871.80-5,135.67

Finding the Fourth Proportional to 9,327.42, 12,871.80 and 5,135.67

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Solution

The fourth proportional to 9,327.42, 12,871.80 and 5,135.67 is: 7,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.42 : 12,871.80 = 5,135.67 : x
  2. Step 2: Convert to fraction form
    9,327.42/12,871.80 = 5,135.67/x
  3. Step 3: Cross multiply
    9,327.42x = 12,871.80 × 5,135.67
  4. Step 4: Simplify right side
    9,327.42x = 66,105,317.11
  5. Step 5: Solve for x
    x = 66,105,317.11/9,327.42
  6. Step 6: Final answer
    x = 7,087.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.